- Add expr_result handling in merge_joinir_mir_blocks - When expr_result matches a carrier, return carrier PHI dst - Enables expr-position loops to properly return accumulator values Note: Phase 219 regression (loop_if_phi.hako) to be fixed in next commit 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>